Smootharc S 309L Electrode 4.0mm x 2.0kg Pack

Smootharc S 309L is a rutile coated, AC/DC electrode that deposits a low carbon, 23Cr, 13Ni austenitic stainless steel weld metal. The electrode is very easy to strike and restrike. Welding performance is excellent with a very smooth, low spatter arc producing a finely rippled bead surface with excellent slag detachability.

• Smootharc S 309L is recommended for welding corrosion resistant and heat resistant steels of the 309 type, which are often used for furnace parts, aircraft and jet engine parts, heat exchangers and chemical processing equipment. Smootharc S 309L can also be used for welding dissimilar carbon manganese steels and low alloy steels, welding stainless steels to mild steels and as a buffer for hardfacing applications.
• Stainless steel can be welded using either AC or DC, with as short an arc as possible to minimise alloy loss across the arc and to control ferrite level. When using AC, a slightly higher current setting may be required.
• When welding in the flat position, stringer beads should be used and, if weaving is required, this should be limited to 2 times the electrode diameter. The heat input, which can adversely affect corrosion resistance and lead to excessive distortion, should be limited by using the correct electrode diameter to give the required bead profile and properties at the maximum travel speed.
• The heat input, which can adversely affect corrosion resistance and lead to excessive distortion, should be limited by using the correct electrode diameter to give the required bead profile and properties at the maximum travel speed.
• Smootharc S 309L electrodes are packaged in vacuum sealed packs.
• For critical applications in damp environments, once the seal is broken, electrodes should be stored in heated cabinets at 70–120°C.